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VoIP Software for Linux

Last updated: February 2026

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95 software options

Twilio logo

Twilio

Build, Scale, and Operate Customized Communication Solutions

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Twilio offers an API for phone services enabling companies to make and receive phone calls and send and receive text messages. It allows programmers to integrate various communication methods and to use existing web development skills and codes to solve communication problems.

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Ultatel Cloud Business Phone System logo

Ultatel Cloud Business Phone System

ULTATEL | Phone and Teleommunication Solutions For Business

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ULTATEL is a leading and innovating provider of cloud-based telecommunications. We help your business unify voice, chat, and video in a single user-friendly platform.

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Zoom Phone logo

Zoom Phone

Cloud-based business phone system

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Zoom Phone is a cloud VoIP phone software designed for businesses of all sizes. With a streamlined administration interface and secure voice calls, Zoom Phone offers a flexible solution for remote workforces. It also features global coverage, virtual phone numbers, fixed VoIP, cloud PBX, multi-line phone systems, and a Zoom Phone API, among other functionalities.

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Zoom Workplace logo

Zoom is an all-in-one collaboration platform

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With Team Chat, Phone, AI Companion, and more, Zoom Workplace is the platform for your best work. With Zoom Workplace, you can share your calendar availability, connect with your team, access your work phone on any device, and more.

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GoTo Meeting logo

Online meeting software with HD video conferencing

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Get a fast, easy and reliable professional solution that enables customers to connect with colleagues through in-meeting chat or conference calling, and screenshare their presentations, all with the click of a button. The Meeting solution from GoTo Connect pairs productivity with flexibility.

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Webex Suite logo

One app for everything. And everyone.

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Webex brings together Calling, Meeting and Messaging modes of collaboration into a seamless, engaging, inclusive and intelligent experience.

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Zoho Meeting logo

Web conferencing tool to host online meetings and webinars.

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Zoho Meeting is a best web conferencing solution built to manage your online meetings, video conferencing and webinars. Completely browser-based and no downloads required.

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Talkdesk logo

Cloud-based contact center & customer experience platform

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Talkdesk browser based call center software works seamlessly over VoIP. Enjoy advanced functionality such as ACD, skills-based routing, IVR and more.

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RingEX logo

RingEX - AI meets trusted communications

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Designed to give you a flexible, mobile, and powerful cloud phone system. Experience HD-quality web, audio, and video, along with one-click functionality and webinar capabilities with RingCentral Video. Promote collaboration with team messaging, unlimited SMS, and more.

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Bitrix24 logo

All in one business management workspace

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Bitrix24 is a #1 business VoIP system used by over 12 million businesses worldwide. Cloud, mobile and open source versions available.

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FreeConferenceCall.com logo
Category Leaders

Web conferencing and team collaboration solution

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FreeConferenceCall.com is a conference management solution designed to help businesses organize, launch & manage meetings with external and internal stakeholders. The audio conferencing functionality lets users connect with participants using VoIP or domestic/local dial-in numbers.

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Kixie PowerCall logo
Category Leaders

More Connections, Better Conversations. AI-enhanced RevComms

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Kixie is a cutting-edge revenue communications platform designed to supercharge your team’s calling and texting capabilities. Kixie leverages AI and automation to streamline outreach, maximize efficiency, and drive real revenue growth — all while keeping the human element in every conversation.

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3CX logo

Web & mobile-based (Android, iOS) communications system.

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3CX is an open-platform, software VoIP phone system that works with popular IP Phones and SIP trunks whether on-premise or in the cloud. Simple, affordable and flexible, 3CX eliminates the cost and management headaches of outdated, traditional phone systems or the limitations of shared cloud PBXs.

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Telnyx Suite logo

All-in-one communications platform & API

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Telnyx is an all-in-one communications platform which delivers voice, messaging & IP services for applications & communications companies. Telnyx enables users to integrate, manage & analyze all of their voice & messaging needs with features like elastic SIP trunking, programmable SMS, & more

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Wildix logo

The First Sales-Oriented Unified Communications Solution.

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Wildix is a global provider of unified communications solutions for simpler, more secure business communications in the digital age.

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Five9 logo

Cloud contact and call center software

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Five9 allows you to make the move to a VoIP call center on your terms with our VoIP phone service, using either a VoIP gateway or the built-in Agent Softphone based on SIP (Session-Initiation Protocol, the leading standard for VoIP communications).

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CloudTalk logo

Cloud-based call center software for sales and support teams

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CloudTalk is a VoIP phone system built for modern companies. Make things easier for your sales and customer support teams with 70+ advanced features and easy-to-setup integrations with your existing business software. It’s the perfect phone system for mid-sized companies. Try a FREE 14-day trial.

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Ooma Office logo

All-in-one VoIP solution for businesses of all sizes.

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Ooma Office is an award-winning and affordable business VoIP solution for any size business. Pricing starts at $19.95/user/month and there are no contracts. We offer two service plans, designed to suit a variety of business needs.

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Genesys Cloud CX logo

AI-enabled experience orchestration platform

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Genesys Cloud CX cloud contact centre lets you differentiate faster, adapt easier, and architect better with an all-in-one composable modern architecture

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Acefone logo

VoIP Phone Service trusted by modern businesses

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Acefone is a VoIP service provider trusted by 10,000+ reputed companies. From guaranteed 99.5% uptime and 24x7x365 support to unlimited calling, get everything your business needs for flawless customer service and butter-smooth operations. Special offer: Unlimited calling at just $12.99/user/month

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Bright Pattern logo

Cloud Contact Center Software with Embedded AI

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Leading global provider of AI-powered omnichannel cloud contact center software.

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ZIWO logo

API Based cloud contact center software with CRM Integration

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ZIWO is a cloud call center software for sales, marketing, customer support for real or virtual agents. Features include CRM integration, outbound dialer, virtual phone , call tracking, call masking , Agent and Admin Mobile App along with live monitoring of Inbound & Outbound KPI such as IVR, FCR.

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11Sight logo

The shortest path to revenue.

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#1 Inbound Video Call Platform for Revenue Teams.

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OnSIP logo
Category Leaders

Cloud-based softphone and voicemail platform

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OnSIP is a softphone and private branch exchange (PBX) solution that helps businesses to manage call recording, transfers, monitoring, reporting and more. It allows companies to utilize the desktop or mobile applications to conduct HD video or voice conferences as well as manage voicemails.

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Pexip Connect logo

All-in-one solution for seamlessly joining meeting rooms

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Seamlessly join Microsoft Teams or Google Meet meetings from your favorite meeting rooms with the touch of a button!

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